Improved car-springs



A. HEBBARD.

Car Spring.

Patented Mar. 13, 1866.

No. 53,222.V

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MN Wx" www@ mmmm Ww W.\ u WWMWMM d d vVV/27418.96*es lll UNiTEn STATESALBERT HEBBARD, OF BUFFALO, NEW YORK, ASSIGNOR TO HIMSELF AND JOHN P.ONDERDONK, OF SAME PLACE.

IMPROVED CAR-SPRINGS.;

Specification forming part of Letters Patent No. 53,222, dated March 13,1866.

To all 'whom it may conce? n:

Be it known that I, ALBERT HEBBARD, assigner to myself and Jol-1N P.ONDERDONK, both of the city of Buffalo, county of Erie, and State of NewYork, have invented a new-and Improved Spiral N est-Sprin g forRailroad-Cars and for other Purposes; and I do hereby declare that thefollowing is a full aud exact description thereof, having reference tothe accompanying drawings, making a part of this specification, inwhich- Figure I is a plan thereof, and Fig. II a vertical section.

The nature of this invention relates to a spiral nest-spring forrailroad-cars and other like purposes; and it consists in constructingand arranging a metallic spiral spring within a metallic spiral springin a manner to forni a nest of spiral springs-three, four, or more innumber each spring being distinct from the other, and the whole actingtogether as one spring.

Letters of like name and kind refer to like parts in each of thefigures.

A represents a spiral spring, made of metal ot' any given diameter,length, and strength ot' metal, constructed according to any wellknownmethod of making spiral springs. B is a similar spring of lesserdiameter and equal length, or nearly so, and placed within the spring A.O is a similar spring of lesser diameter than B, but of equal length, ornearly so, and placed within B. D is a similar spring of lesser diameterthan O, but of equal length, or nearly so, and placed within O. E is asimilar spring ot' lesser diameter than D, but ot' equal length, ornearly so, and placed within D. These several springs-three, four, ormore-arranged together as described, form a nest-spring of greatstrength and durability and ot' suflicient elasticity. In making thisnest-spring I coil the distinct springs alternately to the right andlet't, so that when' placed in nest, the rst or outside spring beingcoiled to the right, the second or neXt inside will be coiled to theleft, and so on. This secures a more perfect action and enables onespring to support the other in a vertical position, the space betweenthe layers ot' the one being crossed by the solid metal of the other,the nest operating as one spring.

I have contemplated makinga nest of springs from one continuous bar orstrand of metal coiled in like manner; but this I do not consider asuseful as the method already described ot' Vmaking each spring separatefrom the other.

I have also contemplated making a slight difference in the length orheight of the several coils constituting the nest, so as to adapt thenest to a light or heavy load-foriustance, the two outer coils being ofa given length, the third a little shorter, and the fourth a trieshorter than the third, and so on, so that with a light load the twoouter springs would sustain the weight. The load being increased, thefirst, second, and third coils would mutually act, and with a stillheavier load the fourth would also act, and so ou.

It will ofcourse be understood that the spiral nest-springs will vary insize, strength, and elasticity according to the place and purpose forwhich they are to be used. They are believed to be much superior torubber springs or metallic springs of any other construction heretot'orein use for railroad-cars, and for all places where springs otgreatstrength and durability are required.

Incase one coil should prove defective, or should break, it can beeasily replaced by another, so that the breaking of one does noty impairthe usefulness of the others, and the nest can be k'ept good at alltimes.

Springs constructed coiled alternately from right to left and puttogether in nest, as herein described, are self-supporting-that is, theyneed no central bolt or outside case, like other spiral springs, toinsure them to work in a vertical position. Nor is it necessary to puttwo or more nests into combination within an encompassing spring orcase. One nest, as herein described, is sufficient for the purpose, andmay be limit-ed to the space and position of a solid-rubber spring forlike purpose. It is cheaper in construction and more perfect in actionthan any other kind of metallic spring for railroad-car trucks.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

A metallic nest-spring, the several separate springs thereof` beingcoiled, the rst right andthe second left, and so on alternately, andplaced in nest, for the purposes and substantially as described.

vALBERT HEBBABD.

Witn esses CHAs. MCCARTHY, WV. H. FoRBUsH.

